Peter Dyneley
Jeff Tracy (voice)
Acting
Shane Rimmer
Scott Tracy (voice)
Acting
David Holliday
Virgil Tracy (voice)
Acting
Jeremy Wilkin
Virgil Tracy / Cravitz (voice)
Acting
Matt Zimmerman
Alan Tracy / Ned Cook (voice)
Acting
David Graham
Brains / Gordon Tracy / Aloysius Parker / Kyrano / Joe / Clayton / 2nd Site Control Policeman (voice)
Acting
Sylvia Anderson
Lady Penelope (voice)
Acting
Christine Finn
Tin-Tin Kyrano (voice)
Acting
Ray Barrett
John Tracy / U.S.N. Sentinel Commander / Compère / 1st Site Control Policeman (voice)
Acting
John Tate
Frank Hooper / Sir Harry (voice)
Acting